Insole for a shoe



FIG. 1 is a top plan view of an insole for a shoe embodying my design;

FIG. 2 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a cross-sectional view thereof, taken along the line 4--4 of FIG. 1. 

The ornamental design for an insole for a shoe, as shown and described. 